I'm aware of qflashplayer. It only works with Flash 3 animations, which are basically non-existant. Swfdec looks like it supports Flash 5, which would be nice. Another idea I had was doing something like WINE for the PocketPC version of the Flash 6 plug-in. It would probably be more effective to just work on Swfdec to get it working with Flash 6/7 though.

I was reading a discussion about the original Xbox's quite excellent Media Center and the intention to try and make it work properly as a BBC iPplayer client. This is good because it means that the FLV format and some of the protocols were going to be reverse engineered or possible published by the BBC, which means that there's a possibility it will trickle down through generic linux to embedded versions.

If you scroll down to the "Browser Plugin" section, you'll see that a plugin is available for Opera. It didn't work, but it showed something! That's enough to pique my interest. I'm going to try to compile Gnash and see if Opera will at least attempt to pick it up as a plugin or helper app.